D7858 — Joint reconstruction (TMJ)
D7858 rebuilds the joint, replacing damaged parts with grafts or prosthetic components.
One of 22 temporomandibular joint treatment codes. If you are trying to understand the treatment, start with the temporomandibular joint treatment guide; if you are trying to understand this line on your estimate, you are in the right place.
What follows is the detail behind the number: the conditions the code sets, its typical fee, its usual benefit treatment, and a code-by-code comparison with its closest neighbours.
The nearby codes and how they differ
D7856 — Myotomy (TMJ-related): It releases or divides a jaw muscle, for spasm or restriction rather than for disease inside the joint.
D7860 — Arthrotomy (TMJ): It opens the joint surgically in order to inspect and treat it directly.
D7854 — Synovectomy (TMJ): It removes the inflamed lining of the joint.
D7852 — Disc repair (TMJ): It repairs a torn or displaced joint disc rather than removing it.
D7858 sits in a group of 22 codes in total; the remainder are linked at the foot of this page. Reviewers compare the narrative against the code rather than the other way round, so the question worth asking is what the notes will say.
Every code in this group
These codes describe the same broad procedure and differ in one respect each. Each has its own page with its own fee range and coverage notes.
Questions about D7858
What is D7858 on my dental bill?
It is the oral and maxillofacial surgery code for joint reconstruction, TMJ, and it means that specific procedure and no other.
How much does D7858 cost?
Expect $2,000–$8,000. Ask for the number in writing, because the code carries no fee of its own and every practice sets its own.
How do dental plans handle D7858?
Typically, yes — medical / dental — often excluded benefits, 0–50%. What varies between plans is the frequency limit rather than whether the procedure is covered at all.
What is the difference between D7858 and D7856?
D7856 is myotomy, TMJ-related: it releases or divides a jaw muscle, for spasm or restriction rather than for disease inside the joint. These are not two versions of one procedure: they are separate treatments, and a plan assesses each on its own merits.
Also known as: TMJ, TMD, jaw joint pain, arthrocentesis, jaw clicking, occlusal orthotic.